The cash-strapped Staten Island school district – the city’s largest – is planning to get rid of more than two-thirds of assistant principals who help monitor student safety.

It’s part of the $300 million in cuts throughout the school system ordered last month by Schools Chancellor Harold Levy, who complained he was forced to swing the ax because Albany and City Hall shortchanged the Board of Education.

Educators had hoped the state Legislature would pass a new budget providing additional aid. But the World Trade Center tragedy reduced, if not eliminated, that possibility – because of the huge amounts of tax revenue lost to the state.

School superintendents throughout the city have been forced to cut programs.

Staten Island appears to have been hit hardest.

About 250 angry parents held a rally yesterday outside Borough Hall, charging that eliminating assistant principals after the WTC attacks is an outrage.

One parent leader even threatened to encourage parents to pull their kids from school if the administrators get the boot.

“Politicians are playing with kids’ lives,” said Joan McKeever-Thomas, president of the Staten Island Federation of Parent Associations.